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/*====================================================================*
 *
 *   Copyright (c) 2013 Qualcomm Atheros, Inc.
 *
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or 
 *   without modification, are permitted (subject to the limitations 
 *   in the disclaimer below) provided that the following conditions 
 *   are met:
 *
 *   * Redistributions of source code must retain the above copyright 
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above 
 *     copyright notice, this list of conditions and the following 
 *     disclaimer in the documentation and/or other materials 
 *     provided with the distribution.
 *
 *   * Neither the name of Qualcomm Atheros nor the names of 
 *     its contributors may be used to endorse or promote products 
 *     derived from this software without specific prior written 
 *     permission.
 *
 *   NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE 
 *   GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE 
 *   COPYRIGHT HOLDERS AND CONTRIBUTORS &quot;AS IS&quot; AND ANY EXPRESS OR 
 *   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
 *   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 *   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 
 *   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
 *   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 *   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 *   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 *   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 *   OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 *   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
 *
 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   plcmdio32.c - Qualcomm Atheros 32-bit MDIO Register Editor
 *
 *
 *   Contributor(s):
 *      Nathaniel Houghton &lt;nhoughto@qca.qualcomm.com&gt;
 *      Charles Maier &lt;cmaier@qca.qualcomm.com&gt;
 *      Matthieu Poullet &lt;m.poullet@avm.de&gt;
 *
 *--------------------------------------------------------------------*/

/*====================================================================*&quot;
 *   system header files;
 *--------------------------------------------------------------------*/

#include &lt;unistd.h&gt;
#include &lt;stdlib.h&gt;
#include &lt;string.h&gt;
#include &lt;ctype.h&gt;

/*====================================================================*
 *   custom header files;
 *--------------------------------------------------------------------*/

#include &quot;../tools/getoptv.h&quot;
#include &quot;../tools/putoptv.h&quot;
#include &quot;../tools/memory.h&quot;
#include &quot;../tools/number.h&quot;
#include &quot;../tools/symbol.h&quot;
#include &quot;../tools/types.h&quot;
#include &quot;../tools/flags.h&quot;
#include &quot;../tools/files.h&quot;
#include &quot;../tools/error.h&quot;
#include &quot;../plc/plc.h&quot;
#include &quot;../ram/nvram.h&quot;
#include &quot;../ram/sdram.h&quot;
#include &quot;../nvm/nvm.h&quot;
#include &quot;../pib/pib.h&quot;
#include &quot;../mme/mme.h&quot;
#include &quot;../mdio/mdio.h&quot;

/*====================================================================*
 *   custom source files;
 *--------------------------------------------------------------------*/

#ifndef MAKEFILE
#include &quot;../plc/Devices.c&quot;
#include &quot;../plc/Display.c&quot;
#include &quot;../mme/UnwantedMessage.c&quot;
#endif

#ifndef MAKEFILE
#include &quot;../tools/getoptv.c&quot;
#include &quot;../tools/putoptv.c&quot;
#include &quot;../tools/version.c&quot;
#include &quot;../tools/uintspec.c&quot;
#include &quot;../tools/hexencode.c&quot;
#include &quot;../tools/hexdecode.c&quot;
#include &quot;../tools/todigit.c&quot;
#include &quot;../tools/hexdump.c&quot;
#include &quot;../tools/hexview.c&quot;
#include &quot;../tools/regview32.c&quot;
#include &quot;../tools/synonym.c&quot;
#include &quot;../tools/error.c&quot;
#endif

#ifndef MAKEFILE
#include &quot;../ether/channel.c&quot;
#include &quot;../ether/openchannel.c&quot;
#include &quot;../ether/closechannel.c&quot;
#include &quot;../ether/readpacket.c&quot;
#include &quot;../ether/sendpacket.c&quot;
#endif

#ifndef MAKEFILE
#include &quot;../mme/EthernetHeader.c&quot;
#include &quot;../mme/QualcommHeader.c&quot;
#include &quot;../mme/MMECode.c&quot;
#endif

/*====================================================================*
 *   program constants;
 *--------------------------------------------------------------------*/

#define MDIO_FLAG_REVERSE (1 &lt;&lt; 0)

#define MDIO_MODE_READ 0
#define MDIO_MODE_WRITE 1

#define CODE_SHIFT 3
#define CODE_MASK (0x03 &lt;&lt; CODE_SHIFT)
#define CODE_HIGH_ADDR 0x03
#define CODE_LOW_ADDR 0x02

#define HIGH_ADDR_SHIFT 9
#define LOW_ADDR_SHIFT 1

#define HIGH_ADDR_MASK (0x000003FF &lt;&lt; HIGH_ADDR_SHIFT)
#define LOW_ADDR_MASK 0x000001FC

/*====================================================================*
 *
 *   signed mdio (struct channel * channel, uint8_t mode, uint8_t phy, uint16_t * data);
 *
 *
 *
 *--------------------------------------------------------------------*/

static signed mdio (struct channel * channel, uint8_t mode, uint8_t phy, uint8_t reg, uint16_t * data)

{
	struct message message;
	signed packetsize;

#ifndef __GNUC__
#pragma pack (push,1)
#endif

	struct __packed vs_mdio_command_request
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t OPERATION;
		uint8_t PHY;
		uint8_t REG;
		uint16_t DATA;
	}
	* request = (struct vs_mdio_command_request *)(&amp;message);
	struct __packed vs_mdio_command_confirm
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t MSTATUS;
		uint16_t DATA;
		uint8_t PHY;
		uint8_t REG;
	}
	* confirm = (struct vs_mdio_command_confirm *)(&amp;message);

#ifndef __GNUC__
#pragma pack (pop)
#endif

	memset (&amp;message, 0, sizeof (message));
	EthernetHeader (&amp;request-&gt;ethernet, channel-&gt;peer, channel-&gt;host, channel-&gt;type);
	QualcommHeader (&amp;request-&gt;qualcomm, 0, (VS_MDIO_COMMAND | MMTYPE_REQ));
	request-&gt;OPERATION = mode;
	request-&gt;PHY = phy;
	request-&gt;REG = reg;
	request-&gt;DATA = HTOLE16 (*data);

#if 1

	printf (&quot; phy 0x%02X&quot;, phy);
	printf (&quot; reg 0x%02X&quot;, reg);
	printf (&quot; data 0x%04X&quot;, * data);
	printf (&quot;\n&quot;);

#endif

	if (sendpacket (channel, &amp;message, (ETHER_MIN_LEN - ETHER_CRC_LEN)) == -1)
	{
		error (1, errno, CHANNEL_CANTSEND);
	}
	while ((packetsize = readpacket (channel, &amp;message, sizeof (message))) &gt; 0)
	{
		if (UnwantedMessage (&amp;message, packetsize, 0, (VS_MDIO_COMMAND | MMTYPE_CNF)))
		{
			continue;
		}
		if (confirm-&gt;MSTATUS)
		{
			error (0, 0, &quot;%s (%0X): %s&quot;, MMECode (confirm-&gt;qualcomm.MMTYPE, confirm-&gt;MSTATUS), confirm-&gt;MSTATUS, PLC_WONTDOIT);
			continue;
		}
		*data = confirm-&gt;DATA;
		return (0);
	}
	return (-1);
}

/*====================================================================*
 *
 *   void function (struct channel * channel, uint8_t mode, uint32_t address, uint32_t content, flag_t flags);
 *
 *
 *
 *--------------------------------------------------------------------*/

static void function (struct channel * channel, uint8_t mode, uint32_t address, uint32_t content, flag_t flags)

{
	uint8_t phy;
	uint8_t reg;
	uint16_t mdio_data;
	uint16_t high_addr = (address &amp; HIGH_ADDR_MASK) &gt;&gt; HIGH_ADDR_SHIFT;
	uint16_t low_addr = (address &amp; LOW_ADDR_MASK) &gt;&gt; LOW_ADDR_SHIFT;

/*
 *   supply chip with high address bytes
 */

	phy = CODE_HIGH_ADDR &lt;&lt; CODE_SHIFT;
	reg = 0;
	mdio_data = high_addr;
	if (mdio (channel, MDIO_MODE_WRITE, phy, reg, &amp;mdio_data))
	{
		error (1, 0, &quot;could not set high address bits&quot;);
	}
	if (_allclr (flags, MDIO_FLAG_REVERSE))
	{

/*
 *   supply chip with first low address bytes and first data chunk
 */

		phy = CODE_LOW_ADDR &lt;&lt; CODE_SHIFT;
		phy |= (low_addr &amp; 0xE0) &gt;&gt; 5;
		reg = (low_addr &amp; 0x1F);
		mdio_data = (content &amp; 0x0000FFFF);
		if (mdio (channel, mode, phy, reg, &amp;mdio_data))
		{
			error (1, 0, &quot;could not read low 16bits&quot;);
		}
		if (mode == MDIO_MODE_READ)
		{
			content = mdio_data;
		}

/*
 *   supply chip with second low address bytes and second data chunk
 */

		phy = CODE_LOW_ADDR &lt;&lt; CODE_SHIFT;
		phy |= (low_addr &amp; 0xE0) &gt;&gt; 5;
		reg = (low_addr &amp; 0x1F) | 0x01;
		mdio_data = (content &amp; 0xFFFF0000) &gt;&gt; 16;
		if (mdio (channel, mode, phy, reg, &amp;mdio_data))
		{
			error (1, 0, &quot;could not read high 16bits&quot;);
		}
		if (mode == MDIO_MODE_READ)
		{
			content |= (mdio_data &lt;&lt; 16);
			printf (&quot;0x%08x: 0x%08x\n&quot;, address, content);
		}
	}
	else
	{

/*
 *   supply chip with second low address bytes and second data chunk
 */

		phy = CODE_LOW_ADDR &lt;&lt; CODE_SHIFT;
		phy |= (low_addr &amp; 0xE0) &gt;&gt; 5;
		reg = (low_addr &amp; 0x1F) | 0x01;
		mdio_data = (content &amp; 0xFFFF0000) &gt;&gt; 16;
		if (mdio (channel, mode, phy, reg, &amp;mdio_data))
		{
			error (1, 0, &quot;could not read high 16bits&quot;);
		}
		if (mode == MDIO_MODE_READ)
		{
			content = (mdio_data &lt;&lt; 16);
		}

/*
 *   supply chip with first low address bytes and first data chunk
 */

		phy = CODE_LOW_ADDR &lt;&lt; CODE_SHIFT;
		phy |= (low_addr &amp; 0xE0) &gt;&gt; 5;
		reg = (low_addr &amp; 0x1F);
		mdio_data = (content &amp; 0x0000FFFF);
		if (mdio (channel, mode, phy, reg, &amp;mdio_data))
		{
			error (1, 0, &quot;could not read low 16bits&quot;);
		}
		if (mode == MDIO_MODE_READ)
		{
			content |= mdio_data;
			printf (&quot;0x%08x: 0x%08x\n&quot;, address, content);
		}
	}
	return;
}

/*====================================================================*
 *
 *   int main (int argc, char const * argv []);
 *
 *
 *
 *--------------------------------------------------------------------*/

int main (int argc, char const * argv [])

{
	extern struct channel channel;
	static char const * optv [] =
	{
		&quot;a:d:ehi:qv&quot;,
		&quot;[device] [...]&quot;,
		&quot;Qualcomm Atheros 32-bit MDIO Register Editor&quot;,
		&quot;a n\taddress is (n) [0x00000000]&quot;,
		&quot;d n\tcontent is (n) [0x00000000]&quot;,
		&quot;e\tredirect stderr to stdout&quot;,
		&quot;h\tsend high-order data before low-order data&quot;,

#if defined (WINPCAP) || defined (LIBPCAP)

		&quot;i n\thost interface is (n) [&quot; LITERAL (CHANNEL_ETHNUMBER) &quot;]&quot;,

#else

		&quot;i s\thost interface is (s) [&quot; LITERAL (CHANNEL_ETHDEVICE) &quot;]&quot;,

#endif

		&quot;q\tquiet mode&quot;,
		&quot;v\tverbose mode&quot;,
		(char const *) (0)
	};
	flag_t flags = (flag_t)(0);
	uint8_t mode = MDIO_MODE_READ;
	uint32_t address = 0;
	uint32_t content = 0;
	signed c;
	if (getenv (PLCDEVICE))
	{

#if defined (WINPCAP) || defined (LIBPCAP)

		channel.ifindex = atoi (getenv (PLCDEVICE));

#else

		channel.ifname = strdup (getenv (PLCDEVICE));

#endif

	}
	optind = 1;
	while ((c = getoptv (argc, argv, optv)) != -1)
	{
		switch (c)
		{
		case 'a':
			address = (uint32_t)(uintspec (optarg, 0, 0x0007FFFF));
			if (address &amp; 0x03)
			{
				error (1, 0, &quot;address must be on an even 4 byte boundary&quot;);
			}
			break;
		case 'd':
			mode = MDIO_MODE_WRITE;
			content = (uint32_t)(uintspec (optarg, 0, 0x0FFFFFFFF));
			break;
		case 'e':
			dup2 (STDOUT_FILENO, STDERR_FILENO);
			break;
		case 'i':

#if defined (WINPCAP) || defined (LIBPCAP)

			channel.ifindex = atoi (optarg);

#else

			channel.ifname = optarg;

#endif

			break;
		case 'q':
			_setbits (channel.flags, CHANNEL_SILENCE);
			break;
		case 'r':
			_setbits (flags, MDIO_FLAG_REVERSE);
			break;
		case 'v':
			_setbits (channel.flags, CHANNEL_VERBOSE);
			break;
		default:
			break;
		}
	}
	argc -= optind;
	argv += optind;
	openchannel (&amp;channel);
	if (!argc)
	{
		function (&amp;channel, mode, address, content, flags);
	}
	while ((argc) &amp;&amp; (* argv))
	{
		if (!hexencode (channel.peer, sizeof (channel.peer), synonym (* argv, devices, SIZEOF (devices))))
		{
			error (1, errno, PLC_BAD_MAC, * argv);
		}
		function (&amp;channel, mode, address, content, flags);
		argv++;
		argc--;
	}
	closechannel (&amp;channel);
	return (0);
}


</pre>
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